[Solved]PGP Signature Error

Now I've done many things to try and fix this but with only a temporary fix. I have installed ntpd and synced with it, so the time issue is out the window. I have replaced the mirrorlist with mirrorlist.pacnew and then updated the mirrors with pacman -Syy. None of this has worked. Now onto what does work, until reboot, when I run pacman-key --populate archlinux I am able to download anything and everything I need from the repo's. But, as stated before it is only a temporary fix. Any ideas on what could be the issue?

Edit: I have looked around the forums for answers but as you can see I have not found anything that is a permanent fix.